Lifting hook



FIG. 1 is a front top perspective view of an embodiment of the claimed design;

FIG. 2 is a rear bottom perspective view of the claimed design of FIG. 1;

FIG. 3 is a front elevation view of the claimed design of FIG. 1;

FIG. 4 is a rear elevation view of the claimed design of FIG. 1;

FIG. 5 is a right side view of the claimed design of FIG. 1;

FIG. 6 is a left side view of the claimed design of FIG. 1; and,

FIG. 7 is a top view of the claimed design of FIG. 1. 

CLAIM We claim the ornamental design for a lifting hook, as shown and described. 